power consumption problem

[air]

Hi,

I'm using nrf51822 / sd130 / sdk 12.1. I am doing minimizing current consumption. My main function is like below. I checked no wakeup in sleep mode. But, current consumption changes variously. It is wide from ~30uA to 1.5mA. What should I do additionally? I'm trying various condition.

thanks.

---

while (1)
{
        // fucntion execute


	NRF_CLOCK->TASKS_HFCLKSTART = 0;       // for test
	NRF_CLOCK->TASKS_HFCLKSTOP = 1;        // for test

	NRF_POWER->TASKS_LOWPWR = 1;           // for test
//	NRF_POWER->SYSTEMOFF = 1;              // for test

	// Make sure any pending events are cleared
	__SEV();
	__WFE();
	// Enter System ON sleep mode
	__WFE();

         // watchdog
	nrf_drv_wdt_channel_feed(m_channel_id);	// wdt feed

	NRF_CLOCK->TASKS_HFCLKSTOP = 0;        // for test
	NRF_CLOCK->TASKS_HFCLKSTART = 1;       // for test
   }

---

watchdog setting

// <1=> Run in SLEEP, Pause in HALT 
// <8=> Pause in SLEEP, Run in HALT 
// <9=> Run in SLEEP and HALT 
// <0=> Pause in SLEEP and HALT 

    #ifndef WDT_CONFIG_BEHAVIOUR
    #define WDT_CONFIG_BEHAVIOUR 8					// 8, mtkim modified, 1 : original
    #endif

[air]

I use below code for beep sound output. MCU is always in sleep status except these function execution. MCU wakes up by SW input and onSound() is 1st called after wakeup. When using makeSound() I can saw abnormal or reset nrf51. But without using makeSound() it works well. I don't know why. I'll check more.

Thanks.

// 1st call for beep sound from main void onSound(uint8_t Num) { // offSound();

timerBuzzer(STOP, NULL);

BUZZER_USE;
ENABLE_TIMER1;

if(Num != BEEP_DOOR_ALARM)
	doorAlarmBeepCnt = 0;						// door open alarm beep cancel

beepOrder = 0;
beepCnt = beepCntInfo[Num];
soundNum = Num;

makeSound(beepLevel[soundNum][beepOrder]);
controlLed(ledInfo[soundNum][beepOrder]);
timerBuzzer(START, beepTime[soundNum][beepOrder]);			

}

// for buzzer disable void disableBuzzer(void) { ret_code_t err_code;

app_pwm_disable(&PWM_BUZZER);

// err_code = app_pwm_end(&PWM_BUZZER); // APP_ERROR_CHECK(err_code); DISABLE_TIMER1;

nrf_gpio_pin_clear(BUZZER_PIN);
nrf_gpio_cfg_output(BUZZER_PIN);

BUZZER_NO_USE;

}

// for beep strength/tone, called by onSound() and buzzer timer handler void makeSound(uint16_t level) { ret_code_t err_code;

err_code = app_pwm_uninit(&PWM_BUZZER);

// APP_ERROR_CHECK(err_code); // app_pwm_disable(&PWM_BUZZER); app_pwm_config_t pwm1_cfg = APP_PWM_DEFAULT_CONFIG_1CH(level, BUZZER_PIN); pwm1_cfg.pin_polarity[0] = APP_PWM_POLARITY_ACTIVE_HIGH;

err_code = app_pwm_init(&PWM_BUZZER, &pwm1_cfg, NULL);			// callback_pwmBuz);
APP_ERROR_CHECK(err_code);
app_pwm_enable(&PWM_BUZZER);

// sound level check

#if !TEST_SOUND_OFF if(fireStatus) while(app_pwm_channel_duty_set(&PWM_BUZZER, 0, SOUND_MAX) == NRF_ERROR_BUSY); else if(batteryStatusSave == BATTERY_LOW) while(app_pwm_channel_duty_set(&PWM_BUZZER, 0, SOUND_MIN) == NRF_ERROR_BUSY);

else if(soundLevelTemp == 0)
	while(app_pwm_channel_duty_set(&PWM_BUZZER, 0, soundLevelInfo[lockInfo.soundLevel]) == NRF_ERROR_BUSY);
else
	while(app_pwm_channel_duty_set(&PWM_BUZZER, 0, soundLevelTemp) == NRF_ERROR_BUSY);

#else while(app_pwm_channel_duty_set(&PWM_BUZZER, 0, SOUND_OFF) == NRF_ERROR_BUSY); #endif }

// buzzer timer handler void handler_buzzer(void * p_context) { UNUSED_PARAMETER(p_context);

beepOrder++;
beepCnt--;

if(beepCnt)
{
	timerBuzzer(START, beepTime[soundNum][beepOrder]);			
	makeSound(beepLevel[soundNum][beepOrder]);
	controlLed(ledInfo[soundNum][beepOrder]);
}
else
{
	timerBuzzer(STOP, NULL);
	disableBuzzer();
	soundLevelTemp = 0;

} }

// buzzer handler make err_code = app_timer_create(&BUZZER_TIMER_ID, APP_TIMER_MODE_SINGLE_SHOT, handler_buzzer); APP_ERROR_CHECK(err_code);

// buzzer timer : various period from 10mS ~ 300mS void timerBuzzer(uint8_t type, uint32_t interval) { uint32_t err_code = NRF_SUCCESS;

if(type == START)
{
	err_code = app_timer_stop(BUZZER_TIMER_ID);
	APP_ERROR_CHECK(err_code);
	err_code = app_timer_start(BUZZER_TIMER_ID, interval, NULL);
	APP_ERROR_CHECK(err_code);
}
else if(type == STOP)
{
	err_code = app_timer_stop(BUZZER_TIMER_ID);
	APP_ERROR_CHECK(err_code);
}

}